Least k>0 such that n-k and n+k are both primes.
1, 2, 1, 4, 3, 2, 3, 6, 1, 6, 3, 2, 3, 6, 1, 12, 3, 2, 9, 6, 5, 6, 3, 4, 9, 12, 1, 12, 9, 4, 3, 6, 5
5 seqfan posts
Fri Dec 25 19:12:50 CET 2009 [seqfan] Re: Christmas puzzle, reformulated :)
Fri Dec 25 17:59:25 CET 2009 [seqfan] Re: Christmas puzzle, reformulated :)
Fri Dec 25 15:51:39 CET 2009 [seqfan] Re: Christmas puzzle, reformulated :)
Mon Feb 9 17:10:16 CET 2009 [seqfan] Re: Rank of a prime (Collatz/Syracuse)
Mon Feb 9 06:16:55 CET 2009 [seqfan] Re: Rank of a prime (Collatz/Syracuse)
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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